需要未知模块“crypto"在本机环境中 [英] Requiring unknown module "crypto" in react-native environment

问题描述

我正在使用 react-native 编写一个简单的 Twitter 应用程序.使用 twit 模块获取 Twitter 提要和流.下面是代码，它工作正常节点.但是，当包含在我的 react-native 应用程序中时，看到错误需要未知模块加密"".依赖似乎是 myapp->twit->oauth->crypto(这是节点 v0.12.2 的一部分).有什么建议可以让它在本机环境中工作吗?

I'm writing a simple Twitter app using react-native. Using twit module to get twitter feeds and stream. Below is the code, it works fine node. However, when included into my react-native app, seeing error "Requiring unknown module "crypto"". Dependency seems to be myapp->twit->oauth->crypto (thats part of node v0.12.2). Any suggestions to get this working inside react-native environment?

var Twit = require('twit')
var T = new Twit({
    consumer_key:''
  , consumer_secret:''
  , access_token:''
  , access_token_secret:''
})
var filtered_tweets=[];
var error;
var isSuccess=false;

function getTweets(searchString){
    T.get('search/tweets',{q:searchString, count:100}, getResponse);
    }

function getResponse(err,data,response){
        if(err) { 
            handleGetErr(err); 
        }
        handleGetData(data.statuses);
    }

function handleGetErr(err){

    enter code here

    error = err;
    }

function handleGetData(data){
    data.map(function(tweet){
      var twit={
        twit:tweet.id,
        created_at:tweet.created_at,
        text:tweet.text,
        retweet_count:tweet.retweet_count,
        favorite_count:tweet.favorite_count
      };
      filtered_tweets.push(twit);
    });
    console.log(filtered_tweets);
    isSuccess=true;
}
getTweets("@sahaswaranamam");
module.exports = getTweets;

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推荐答案

crypto 模块是一个内置的 Node 模块；React Native 在 JavaScriptCore(在设备或模拟器上)和 Chrome 本身(在使用 Chrome 调试时)上运行 JS，因此依赖于内置 Node.js 模块的模块将无法工作.请参阅 React Native 的JavaScript 运行时部分文档了解更多信息.

The crypto module is a built-in Node module; React Native runs JS on JavaScriptCore (when on the device or simulator) and on Chrome itself (when using Chrome debugging), so modules that depend on built-in Node.js modules won't work. See the JavaScript Runtime section of the React Native docs for more info.

我不确定集成到 React Native 应用程序会有多困难，但是像 Browserify 这样的浏览器模块捆绑器通常有核心 Node.js 模块的浏览器版本，例如 这个用于 crypto.

I'm not sure how hard it would be to integrate into a React Native app, but browser module bundlers like Browserify often have browser versions of core Node.js modules, like this one for crypto.

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